How does the playwright develop the theme in this passage?

Beneatha's reaction to Walter's teasing shows that family members are often crueler to one another than strangers are.
Beneatha's reaction to Walter's teasing shows that even family members who see the world differently can get along with one another.
Walter’s teasing of Beneatha shows that every family deals with severe tensions.
Walter’s teasing of Beneatha shows that one’s identity cannot be separated from race.

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